Finding the Fourth Proportional to 14,145.54, 21,210.18 and 5,831.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,145.54 : 21,210.18 = 5,831.30 : x
2. Step 2: Convert to fraction form
   14,145.54/21,210.18 = 5,831.30/x
3. Step 3: Cross multiply
   14,145.54x = 21,210.18 × 5,831.30
4. Step 4: Simplify right side
   14,145.54x = 123,682,816.58
5. Step 5: Solve for x
   x = 123,682,816.58/14,145.54
6. Step 6: Final answer
   x = 8,743.59